Hi Chopper,
I appreciate your honest assessment of the matter, and I would agree with your perspective on Revelation 20:10-15. I will present a couple ways that annihilationists have dealt with these texts, Revelation 20:10 and Revelation 14:9-11 (which goes into even more detail).
Position #1 (the one I don't support)
There are many who believe only demonic forces will be punished forever, which includes those who receive the mark of the beast.
Position #2 (the one I do support)
That the straight-forward interpretation of this passage is ill-advised. Now is this just a rejection of the literal approach for my own purposes, or is there justification for such a position? Well, the book of Revelation is Apocalyptic literature which contains a lot of symbolic and metaphorical language as it did in the Old Testament. Much of the response to liberalism has since over-emphasized the need to literally interpret the Bible, even when proper hermeneutics dictate that we shouldn't.
My question then, is if there are any instances of this imagery being used else where that indicates a metaphorical interpretation? You'll find the answer and the evidence interesting I hope.
Going back to the OT Apocalyptic literature, we find Isaiah prophesying the destruction of Edom in Isaiah 34, where he writes.
And the streams of Edom shall be turned into pitch,
and her soil into sulfur;
her land shall become burning pitch.
Night and day it shall not be quenched;
its smoke shall go up forever.
From generation to generation it shall lie waste;
none shall pass through it forever and ever. Isaiah 34:9-10 (ESV)
And now compare to Revelation 14:10-11
he also will drink the wine of God’s wrath, poured full strength into the cup of his anger, and he will be tormented with fire and sulfur in the presence of the holy angels and in the presence of the Lamb. And the smoke of their torment goes up forever and ever, and they have no rest, day or night, these worshipers of the beast and its image, and whoever receives the mark of its name.” Revelation 14:10-11 (ESV)
Now, in Edom it said that the smoke from it shall rise forever. Does it still rise forever today? No.
It said that it will always lie waste. Does it still lie in waste today? No.
It said that none will ever pass through it. Does anyone pass through it today? Yes, there is a highway where ancient Edom was.
Now if we understand this imagery literally, we come to see that this didn't actually happen. Unless like many other prophecies this imagery is hyperbole to speak about the permanent destruction of Edom. Therefore, as this imagery is employed elsewhere as hyperbole to describe permanent destruction, I view the texts in Revelation 14 and Revelation 20 in this Hebriac way.
Also here is an image that might be helpful in looking at some of the various views on the matter.